Blind attachment



L. A. DE VILLERS.

BLIND ATTACHMENT.

APPLICATION FILED JANA, 1919.

1 ,333,906. I Patented Mar. 16, 1920.

UNITED STATES "iigT-ENT OFFICE.

LOUIS ALPHONSE DE VILLERS, F WINNIPEG, MANITOBA, CANADA.

BLIND ATTACHMENT.

Application filed January 4, 1919.

an improved form of fastening which will.

automatically release to free the blind from the roller when the same has been extended or pulled oi the roller the full length and by so doing prevent the destroying of the blind as occurs where the blind is permanently fastened to the roller.

A further object is to construct the attachment in a simple, easily applied and durable manner and so that it can be relied on to always do its work.

With the above objects in View the inven tion consist essentially in the arrangement and construction of parts hereinafter more particularly described and later pointed out in the appended claims, reference being had to the accompanying drawing in which Figure 1 represents a portion of a window frame with a blind attached thereon.

Fig. 2 represents an enlarged vertical sectional view through a blind and roller with my attachment thereon and with the blind partially wound on the roller.

Fig. 3 represents a view similar to Fig. 2 with the blind extended or about pulled off the roller.

Fig. 4. represents a view similar to the preceding ones with the blind released.

Fig. 5 represents a plan view of the roller, certain parts being broken away to expose construction.

Fig. 6 represents a plan view of a fragmentary portion of the blind.

In the drawing like characters of reference indicate corresponding parts in the several figures.

1 represents a window frame provided with the usual brackets 2 and 3 which receive the customary end supports 4 and 5 of the blind roller 6. These parts, with the exception of certain changes in the roller, are of ordinary construction and are not herein more minutely described.

In the present instance the roller is shown Specification of Letters Patent.

Patented Mar. 16, 1920.

Serial No. 269,627.

as a metal one comprising disk like ends or heads 7 which carry a cylindrical sheet metal body 8. 9 represents a lengthwise extending groove formed in the sheet metal body of the roller and having one of the side walls 10 thereof positioned more or less at an 0btuse angle to, the base 11 of the groove and the other side wall 12 curved to present what might be called a side extension or pocket 13 to the groove which lies behind an overhanging tongue 14. This groove'or channel with its extension can be made by shaping the sheet forming the cylindrical body prior to mounting it on the heads 7.

The blind 15 which is mounted 011 this roller has the attaching end enlarged, this being accomplished in the present instance by turning the end of the blind back on itself and sewing down and then inserting a wire 16 in the hem so formed. The enlarged end of the blind is inserted in the pocket as best shown in Figs. 2 and 3 of the drawing and it is releasably secured in this position by the device now described.

17 represents an arched strip or plate passing lengthwise of the. roller and arched to lie flat on the roller. One edge of the plate is pivotally attached as at 18 to the body of the roller and when in place it is desirable to have the groove in the roller lying more or less centrally underneath the plate. 19 represents a lengthwise extending clamping bar permanently secured to the inner side of the plate and adapted to enter the groove 9. This bar and plate form what might be termed a releasable clamp for holding the blind to the roller. When it is desired to secure the blind to the roller the plate is swung out or away from the roller and the enlarged end of the blind is placed in the pocket. The plate is then swung back to the. original position and in this position the bar 19 is designed to enter the pocket and jam in between the edge of the tongue and the wall. 10. Here however it is explained that it must not jam in too tightly but just suiiiciently to maintain its closed position under normal conditions. Once the fasteningis made there will be a part of the blind off unduly, it will automatically release itself from the roller, thereby preventing the tearing or other destruction of the blind. The releasin action is best disclosed by reference to Iigs. 3 and 4. In Fig. 4t the. blind is the end of the'blind from the pocket and free the blind without damage.

lVhile I have described this invention-as associated with a window blind, still I wish it t0 be understood that it can be applied on any blind winding off and on a roller and where it is desired to have the blind automatically released from the roller whenthe blind is unduly unwound.

Further, while I have shown the invention as utilized on a' metal roller, still it will be readily understood that a wooden roller could be used and that in such an instance it would be only necessary to form the groove by channeling it out-in the wood.

hat I claim as my invention is 1. The combination with a roller and a V blind, of'a releasable clamp normally fastening the inner end of the blind to the roller and designed to be released by the pulled blind at a'time immediately prior to the blind being totally unwound from the roller.

2. The combination with a roller and a blind, of a swinging'clamp normally clamping theinner end of the blind to the roller and designed to be swung away from the roller by the action of the unwinding blind and to release the blind from the roller at the time the blind is practically unwound from the roller.

3. In combination, a roller having a lengthwise'extending groove therein, a blind having the inner end entered within the groove, a clamping plate lying on the face of the roller and extending to opposite sides,

of the groove and covering a portion of the inner end of the blind and a clamping bar attached to the plate and normally entering the groove and holding the blind normally fastened to the roller.

4:. In combination, a roller having a lengthwise extending groove formed therein, said groove having a side pocket, a blind having the attaching end enlarged and lying in the pocket, a plate lying on the roller and covering the groove and extending to the sides of the groove and overlying the inserted end of the blind and a clamping bar carried by the plate and entering the groove and locking the enlarged end" of the blind in the pocket.

5. In combination, a roller having a I lengthwise extending groove formed therein, said groove having a side pocket, a blind having the attaching end enlarged and lying in the pocket, a plate having one edge pivotall-y attached to the roller, said plate novering and extending across the groove and V overlying at its free side the attached end of the blind lying on the roller and a clamping bar secured to'the plate and extending within the groove and normally locking the enlarged end of the blind in the pocket.

Signed at Vinnipeg, this 21 day of October, 1918.

LOUIS ALPHONSE DE VILLERS.

In the presence of-.

G. S. RYBURGH,

H.- B. WAKEFIELD. 

